Telephone set.



Patented May 2.4, 1910. v

W ILL/AM 4/5 we W. KAISLING.

TELEPHONE SET. v APPLIUATION FILED AUG.1, 1908. I

UNITED STATES PATENT OFFICE.

WILLJEAM, msmno, or ozrrroa'oo, r'LLINors, assrsnon, BY MESNEnssremn'rs, 'r'o -KELLOGG SWITCHBOARD & SUPPLY COMPANY, a GGRPGRATION orILLmoIs.

mini-noun sn'r.

Specification of- Letters latent.

'lpplicationfiled August 1, 1908. Serial No. 446,452.

Patented May 24, 1910.

To all whom it may concern:

Be it known that I, WILLIAM KAIsLrNo, a citizen of the UnitedStates,'re'siding in Chicago, county of Cook, and State of'Illinois,have invented new and useful Improvements in Telephone Sets, of whichthe following is a specification.

An object of the present invention is to provide an improved arrangementin the 'mounting of the mechanism of a subscribers vide improved meanswhereby the impulsecontrolling device and. the different parts may beconnected without the use vof'the customary hinged connections.

Referring to the drawings, wherein like parts have like referencecharacters, Figure 1 is a front elevation of a wall-set arranged inaccordance with the invention Fig. 2 is a sectional view on line A-A ofl ig. 1; Fig. 3shoWs-the detail of a preferred flange conmotion betweenthe shelf and the inclosing case; and Fig. 4 shows a portion of thefront wall of the case, including a slot provided for pur oseshereinafter specified.

The instrument includes a backboard or plate 5, upon which thetransmitter l is'adjustably mounted as usual. To the backboard 5, anangular piece 6 is rigidly fastened to form a well or box for thecondenser 4. Hinged at 7 to the piece 6, is the base 9 of thecontaining-box, to which is attached the front 10 of the box, the sidewalls 8+8 being fastened to baseS) and front 10. The top of thecontaining-box is formed of the plate 11 which is provided with angularflange members 21 adapted to slide in the slots 20 provided in theopposed side walls 88. The top 11 has an upturned piece 22, pierced toreceive the screw 23, and toward the distant side, the spring member 26,arranged to cooperate with the front 10 as a holding device, as laterexplained.

In mounting the apparatus, the backboard and condenser-well having beenassembled, the containing-box without the top may be hinged to the welland allowed to drop forward upon the-hinges. The top 11, wh1ch 1naddition to the parts already mentioned has fastened to it a callingdevice including a dial 12 (which may be of the ordinary is then drawnforward or to the left as viewed inFig. 2, the flange members 21 slidinginto the slots 20; and when the flanges 21 engage the front 10, thespring member 26 will have passed-through the slot 25 in the front 10and will snap down to the position shown in Fig. 2 to hold the top inadjusted position when the now complete containing box is turned upwardon the hinges and the screw 23 is inserted through the piece 22 andbackboard 5 and screwed into the fixed nut shown. In case of trouble inthe calling device mechanism, it is only necessary for the repair man tounscrew 23, lower the box about the hinges, press up spring 26 so thatit lies along the top 11, and slide the top plate back until the flanges21 disengage the slots 20 when; the top plate and calling device may belifted free and replaced by a new top plate with its properly adjustedmechanism.

The present invention is not concerned known local battery cuits may beused. I, a

At 24, I have indicated terminals to which or common battery cirthe lineand ground wires may be led. To

provide for such connections as may be necessary from the apparatusfixed in position with respect to the backboard, I provide a set ofstationary spring members 18, which hinges, the jack springs 19 will bewith-- drawn from engagement with their respec tive springs 18, and whenthe box 15 again returned to its adjusted operative position, the jacksprings 19 will slide into engage with any specific circuit arrangementto be employed, as. obviously any of the wellring 18 being firmly heldbetween the mide and outer tines of the appropriate jack spring 19,Further, spring members 16 are insulatingly mounted upon the front platea 1.0 for engagement with the forked jack '17, supported by the topplate11, v

a so thatwhen one top (plate with its call-ing v e ha-m'sm 1s remove 1'0ew top plate, will engage lt pr p plate into position. "'15 p andanother substituted, each jack spring17,1sup ported by the m nal 16,'.and necessary connections will be established by the act of sliding'a new top 7 Connections required to be extended from the terminals 24to the mechanism supported by the top plate 11, will of course be edeviceand the customary ringing key s dthrough contacts 18'19, thence bysol dered connections to the terminals 16, and so through the. jacksprings 17 to the calling Prlng 15, foroperatingwhich the button 14 1sin I serted through plate 11.-

Obviously the invention is not limited to the precisefarrangement of theapparatus or to the precise locations, as illustrated, of the signalmand switching elements. Also. various modifications may be made in theprecise arran ement of the parts,- by which the calling evice supportingmember is connected with theother' apparatus. For

example, the holding member, 26 may. be actuated by :position, andvarious modifications of the gravity to assume its holding 'slidestructure may be made. The claims are therefore' not to be limited tothe precise arrangement shown, but

What I claim is 1. A telephone set including a back plate, a

hinged containing box supported thereby, an

impulse controllingdevice, a slidabl'y removable cover for said boxsupporting said devic'e anda catch for locking said cover in adjustedposition.

2; A telephone set including-a containing box Ijack members mountedwithin sa1d box, a slidably adjustable cover for said box, impulsecontrolling mechanism fastened'to.

ment .with the respective springs 18, each said cover and cooperatingjack members connected with said mechanism adapted to register with saidfirst mentioned members placed in adjusted posidevice, a slidableremovable cover whereby said member passes box having box havingseparable walls, an impulse controlling,

for said box supporting said device, and

spring jacks on one of said walls and oncover registering when sa1d boxis said closed.

5. A telephone set including a relatively stationary back plate,stationary jack members supported by said plate, a relatively movablecontaining box hinged and supported by said back plate, j ack membersfastened to said box to register with said first mentioned jack memberswhen said box is in adjusted position, an impulse controlling device, aslidable removable cover for said box supporting said device, .and jackmembers on one of said walls and on said cover registering when said boxis closed.

6. A telephone set including a containing box having a back wall andguides, a cover for said box-slidable in said guides to a closingposition, a calling device supported by sa1d cover, and holding meansfor removably securing said cover to the back wall of said box. 1

In witness whereof, I hereunto subscribe my name this 28th day ofJuly,1908.

. WILLIAM KAISLIN G.

\Vitnesses G. E. MUELLER, J. G. Kaunas.-

